Yoshikatsu became Seii Taishogun at 8 years of age a year after the assasination of his father Yoshinori by Akamatsu Mitsusuke[?] in the Kakitsu Rebellion[?] of 1441.
However, Yoshikatsu died from disease in the next year and was succeded by his younger brother, the 8th shogun Ashikaga Yoshimasa, in 1449.
wikipedia.org dumped 2003-03-17 with terodump